package com.xmb.wcapi.util;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class JsonDateTypeConvert extends JsonSerializer<Date> {
	/**
	 * @param value 是要转换的日期
	 * @param gen 为一个json对象生成器
	 * */
	@Override
	public void serialize(Date value, JsonGenerator gen, SerializerProvider serializers)throws IOException, JsonProcessingException {
		//定义日期字符串转换对象
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		//将日期转换为指定格式字符串
		String dateStr = sdf.format(value);
		//将此字符串写入到json对象中
		gen.writeString(dateStr);
	}
}